someone who protects someone or something保护者
Philip II considered himself the protector of the Catholic Church.腓力二世将自己看作天主教的保护者。
She has a reputation for being an ardent protector of individuals' liberties.她是位著名的对个人自由的热情捍卫者。
a piece of equipment that protects someone保护装置,保护物
a back and chest protector胸背保护装置